1) Persian surname 
Arbab (Urdu, ارباب) is a Persian word that means `boss`, `master` and `landlord`. It was a title used by tribal leaders in Middle East and South Asia. It is the title used by the heads of the Pashtun Kasi tribe in Balochistan. It is also used by the Samat{dn|date=September 2013} tribes like Sammo, Abro, Nohrio, and Jakhro tribes in Sind...